Earlier this year, we had the chance to work with Celo on a security audit of the Self project, a new approach to on-chain identity built around biometric passports and zero-knowledge proofs.
Over the course of three weeks, we reviewed core components of the protocol: cryptographic primitives (including ECDSA and RSA implementations in Circom), key circuits and smart contracts, and a TEE-based proof delegation system built on AWS Nitro Enclaves.
Working with the Celo team was a great experience. They were responsive, transparent, and genuinely committed to building something robust. The Self system covers a lot of ground, from passport parsing to enclave attestation to smart contract architecture, and we appreciated the level of care and context they brought to each part of the discussion.
As with any complex system, we found areas for improvement. But more importantly, the team was quick to address critical issues, and open to strategic recommendations that went beyond simple fixes.
We look forward to seeing how Self evolves, and we’d be glad to collaborate again in the future.